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OLIVER PEARL, OF LAWRENCE, MASSACHUSETTS.

Letters .Patent Na. 74,416, dated February 11, 1868,

IMPROVEMENT IN SPINNING-THROSTLE.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, OLIVER PEARL, of Lawrence, in thecounty of Essex, and State of Massachusetts, have invented anew and useful Improvement--the Dead-SpindleThrostlc-Frames; and I do hereby declare that the following is a full, cle'ar, and exact description of the same, reference being had to the annexed drawings, in Which-- Figure 1 is aperspective' view, yshowing the several parts as separated.

Figure 2 is a vertical longitudinal section.

Figure 3 is a similar-section, showing `a. different arrangement of the. bearings.

. The same letters are used to designate the same parts in all the figures.

My improvements consist in constructing a ilier for. a dead-spindle throstle-frame, so as to balance the weightabove and below the whirl, by extending a tubular bearing below the whirl, which is sustained in a tube set in the top rail, with' bearings above and below toA prevent vibration and irregular'wear from friction.

In the annexed drawings, A is the spindle. The barrel is of uniform` size. The tip has,at the basea button, B, on which the bobbin C rests. A cloth washer is placed on this button, to create friction to wind up the yarn on the hobbin as fast as it is spun. I) is the whirl, which revolves on the ybarrel of the spindle, carrying with it the flier-arms E, which I prefer to make attened, so as to present their edges in the directionof -their revolution. Quirls are made on the ends of the arms, through which the yarn passes. As the centrifugal force lwould causel thearms to expand, when the iiiers were revolving at a high speed, they are surrounded by a ring,

F, which maintains them in position, and enables my improved iiiers to be run at a speed much higher than can be attained `with the ordinary open fliers. The whirl is attached to a tube, D, extending below it, and which turns freely on the spindle. A composition collar, D2,-surrounds this tube immediately below the whirl.l A recess is formed in the niiddle part of the tube Dl, to lessen the friction. This tube D turns, with the revolution oi' the whirl, within a tube, G, which is fastened by aset-screw in the top rail; it may rest on the composition bearing D2, or a ring may be placed within the tube G, resting upon a shoulder at G,on which the lower end of the tube Dl will revolve. In any case, however, bearings above and below at Dif D3 will be formed suicient to prevent any vibration of the tubular support of the whirl, while revolving at a high velocity. These bear-A ings may be placed either on the tube DI, or they may be made as rings, swelled on the inner face of the tube G above and below, in which case the tube D would be straight. The spindle is attached to the lower rail in the y usual manner, rising and falling through the whirl and tubular bearing D.

What I claim as my invention, and desire to secure by Letters Patent, is An inverted Hier, provided with a ring, a. whirl, and an elongated Atubular extension, substantially as described, combined with the spindle and the elongated tubular bearing, as shown, audtor the purpose set forth. In testimony whereof', I have signed my name to this specification in the presence of two subscribing witnesses.

'OLIVER PEARL. Witnesses:

R. MAsoN, JOHN D. Bloor.. 

